9th CLASS GUESS PAPER- 2022 PHYSICS.
UNIT NO. 1
PHYSICAL QUANTITIES AND MEASUREMENT. SHORT QUESTIONS.
1. Describe two advantages of physics in daily life. 2. Define Plasma Physics and Geophysics. 3. Define Base quantities and write names to four base quantities. 4. Define base and derived quantities. 5. What is meant by prefixes? Write an example. 6. Define Scientific notation.
UNIT NO. 2
KINEMATICS
1. Define Translatory motion and give an example. 2. Define Random motion and give example. 3. Define vibratory motion and give its example. 4. Define velocity and SI Unit of velocity. 5. Difference between Scalar and Vector. 6. Define acceleration and write its SI unit.
UNIT NO. 3
DYNAMICS
1. State Newton’s first law of motion.
2. Difference between Mass and Weight.
3. Define Newton’s 3rd law of motion. Give an example.
4. Why rolling friction is less than sliding friction.
5. What is meant by Braking and skidding?
6. What is meant by the tension of string?
7. Define the coefficient of friction and its written equation.
8. Define Centripetal force and centrifugal force
UNIT NO. 4
TURNING EFFECT OF FORCE
1. What are like and unlike parallel forces?
2. Define the Resolution of forces.
3. Define rigid body and line of action of forces.
4. Define Equilibrium.
5. What is meant by neutral equilibrium?
6. State the second condition for equilibrium and write its formula.
7. What is meant by unstable equilibrium?
UNIT NO. 5
GRAVITATION
1. Why the law of Gravitation is important to us?
2. Define the law of gravitation and write its equation.
3. What is the gravitational field?
4. Define field force and gravitational field strength.
5. Give the orbital speed formula for Artificial Satellite.
6. How the mass of the earth can be determined.
7. Define field force.
8. What are natural satellites?
9. Difference between ‘G’ and ‘g’.
10. Write the value of “G” and write the SI unit.
UNIT NO. 6
WORK & ENERGY
1. Define Jule.
2. What is meant by light energy?
3. Define potential energy and write its equation.
4. What is meant by Nuclear Energy?
5. Write down the two disadvantages of fossil fuels.
6. Define efficiency and write its equation.
7. What is meant by power? Define its SI Unit.
8. On which factors work depend
UNIT NO. 7
PROPERTIES OF MATTER
1. The mass of 200 cm3 of stone is 500 grams. Find its density.
2. Define features of a kinetic molecular model of matter.
3. Define Hooke’s law
4. State Young’s Modulus.
5. Define Density and Elasticity.
6. Define Pressure and give it a unit.
7. Why does a piece of stone sink in water but a ship with a huge weight floats
8. Define elasticity.
9. Differentiate between Stress and Strain.
10. State Pascal’s law.
11. State Archimedes principle
UNIT NO. 8
THERMAL PROPERTIES OF MATTER
1. How does heating affect the motion of molecules of a gas?
2. Convert 100 oF temperature into Celsius scale.
3. Define Specific heat.
4. Difference between heat and temperature.
5. Define Latent Heat of fusion.
6. Why gaps are left in railway tracks?
7. Define lower and fixed points.
UNIT NO. 8
TRANSFER OF HEAT
1. Write the names of two expert Thermal riders.
2. What is meant by convection currents?
3. Difference between land and sea breezes?
4. Define Radiation.
5. Define convection and conduction.
6. Define the thermal conductivity of the substance.
7. We wear white and light-colored clothes in summer why?
8. Write two using a good conductor.
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